Principles of Engineering Mechanics (2nd Edition) Episode 14 pps

... [vx' vy' v,'] The unit vectors of one set of co-ordinates is expressible in terms of the unit vectors of another set of co-ordinates; thus i' = alli+alj+a13k ... Modulus of rigidity 221 Mohr’s circle 224 Momentum 21 Momentum, conservation of 111 Momentum, linear 111, 192 Momentum, moment of 11 1,192 Moment of force 37 Moment of i...

Ngày tải lên: 12/08/2014, 16:21

... of the graphs of log I E3 (jw) I will have the same shape, independent of the value of 7. A template can be made of the curve which has been drawn for a particular value of ... product of co- 7 Hz sinusoidal force of amplitude equal to 1% of the ordinates.) weight of machine A is applied to the machine at A what is the amplitude of motion of...

Ngày tải lên: 12/08/2014, 16:21

... of the tube shall be the same as that of the rod. So with reference to Fig. 12.22 we see that the compression of the tube is equal to the initial lack of fit plus the compression of ... of area and denoted by I. Similar to moment of inertia, the second moment of area is often written as I=Ak2 where A is the cross-section area and k is known as the radius...

Ngày tải lên: 12/08/2014, 16:21

... moment of external forces = C moment of (mass x acceleration) = moment of the rate of change of = rate of change of the moment of or momentum momentum We may n~~ke use of ... equal to the product of the total mass and the acceleration of the centre of mass. We must now consider the effect of the positions of the lines of action of t...

Ngày tải lên: 12/08/2014, 16:21

... side of a hill which slopes at 30" away from the centre of curvature of the path as shown. The radius of curvature to the centre of mass can be taken as 30m. The coefficient of ... Moment of inertia of a right circular uniform i) Moment of inertia about the axis of the cylinder. In Fig. 6.8, the mass of an elemental rod is pLdr(rdO), where p is the...

Ngày tải lên: 12/08/2014, 16:21

... consequence of equations 8.8 to 8.10 is the relationship which exists between the velocity of approach and the velocity of recession of the points of contact. Velocity of approach ... and that of the spider is 0.09 kg m2. Each planet has a mass of 2.0 kg and an axial moment of inertia of 0.0025 kg m2. The centres of the Planet wheels are at a radius...

Ngày tải lên: 12/08/2014, 16:21

... at angle a to the horizontal. The conveyor consists of a set of rollers 1, 2, 3, . . ., each of radius r and axial moment of inertia I and spaced a distance 1 apart. The ... single-degree -of- freedom system shown in Fig. 9 .14( a) has a sinusoidally varying force applied to the mass. Measuring x from the position of no strain in the spring, the equation o...

Ngày tải lên: 12/08/2014, 16:21

... the total mass times the acceleration of the centre of mass, and is independent of any rotation. Moment of momentum The moment of momentum of a particle about a point 0 is defined ... a flywheel of moment of inertia I, and the damping torque at the load is equal to C times the angular velocity of the load. The moment of inertia of the rotor of t...

Ngày tải lên: 12/08/2014, 16:21

... study of the motion of material bodies and of the associated forces. The study of motion is called kinematics and involves the use of geometry and the concept of time, whereas the study of the ... vector sum of the external forces acting on a particular set of particles equals the total mass times the acceleration of the centre of mass, irrespective of the indi...

Ngày tải lên: 27/06/2014, 05:20

... Part 3 Engineering Mechanics syllabuses of degree courses in engineering. The emphasis of the book is on the principles of mechanics and examples are drawn from a wide range of engineering ... vector sum of the external forces acting on a particular set of particles equals the total mass times the acceleration of the centre of mass, irrespective of the indi...

Ngày tải lên: 27/06/2014, 18:20